38568138 has 64 divisors (see below), whose sum is σ = 98288640. Its totient is φ = 9821952.

The previous prime is 38568137. The next prime is 38568181. The reversal of 38568138 is 83186583.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 38568138.

It is not an unprimeable number, because it can be changed into a prime (38568133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12145 + ... + 14987.

It is an arithmetic number, because the mean of its divisors is an integer number (1535760).

Almost surely, 2^38568138 is an apocalyptic number.

38568138 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38568138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49144320).

38568138 is an abundant number, since it is smaller than the sum of its proper divisors (59720502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38568138 is a wasteful number, since it uses less digits than its factorization.

38568138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891.

The product of its digits is 138240, while the sum is 42.

The square root of 38568138 is about 6210.3251122626. The cubic root of 38568138 is about 337.8647557140.

The spelling of 38568138 in words is "thirty-eight million, five hundred sixty-eight thousand, one hundred thirty-eight".